Alternative use for abandoned sand mine quarries :)

[PineBarrens Advocate]

Rooftop solar is still fairly inefficient but once you goto large scale projects like this it can become quite cost effective. I could see a company leasing a quarry pond for 25 years

Better than building on open space (although former capped landfills are ok).

http://www.atlasobscura.com/article...utm_source=facebook.com&utm_medium=atlas-page

 

[ninemileskid]

Capped landfills should be mined.